Okay now that sounds rather hoity-toity, but I was lucky enough to buy this recent demo that Robert Liberace painted for his afternoon class. This painting showed how he painted a nose, lips and eyes of a male model. Later, once his demos were over he painted a wonderfully delicate portrait of the model as well.
Here is a close-up of the lips Rob painted. He told me he’d used a very limited palette of raw umber, burnt sienna, titanium white, ultramarine blue and a red; it looks like a bluish red-so perhaps alizarin crimson but I’m not 100% certain.
The pictures I took of the small portrait did not turn out well, I will try again tomorrow and will post the results.